Lubricator



s. 1 LATHROP.

LUBRICATOR.

Patented Dec.- 20, 1887.

N. PETERS. PtmloLilhagraphnr. Washinglum D4 C.

' (No Model.)

UNITED STATES PATENT OFFICE.

S. PARK LATHROP, OF MONTCLAIR, NEW JERSEY.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent N0. 374,977, dated December 20,1887

Serial No. 224,208. (No model.)

To all whom it may concern.-

Be it known that I, S. PARK LATHROP, a citizen of the United States, residing at Montclair,Essex county, New Jersey, have invented certain new and useful Improvements in Lnbricators or Oil-Cups, fully described and represented in the following specification and the accompanying drawings, forminga part of the same.

This invention relates to an improved construction for the regulating-valve and its attachments, and for the cover to the filling aperture, and will be understood by reference to the drawings, in which- Figure 1 is a side view of the lubricator. Fig. 2 is a central vertical section of the casing and the feed-tube with the inclosed valvestem and its attached springs. Fig. 3 is a detached view of the valve-stem and its attachments. Fig. at is a plan of the lubricator, and Fig. 5 is a section of the feed-tube and inclosed stem on line x as in Fig. 2.

A is the shank, with thread A for its attachment, when required.

B is the feed-tube, extended upward and formed with a bore, which terminates at its lower end in a conical seat, 0, within the shank.

. D is the bottom of the oil-cup; E, a glass shell fitted thereto, and F a cap secured on the top of the shell by a cap-nut, G, screwed over the top of the tube B, which projects through the cap F.

H are holesin the tube, near the bottom D, to feed oil to the seat 0, which connects with the outlet-hole I.

J is the valvestern within the tube B, shown herein terminating at the seat 0 in a point or valve, J, and at the top in a knob, J The stem is threaded, and is provided with several attachments to hold the actuating-springs Z Z in place. The spring Z is applied beneath the cap-nut G, and presses upon the block m on the middle of the stem, to hold the valve to its seat. The block at is of oblong form, and is fitted to slide on the stern without turning by means of a pin, m, inserted through the same, and a slot, 3, in the stem. A nut, n, is applied to the stem above the block, to prevent the block from sliding upward beyond the nut.

The spring Z is retained between the block at and a nut, a, near the lower end of the stem, and the spring and the nuts are fitted to move freely within the feed-tube B. The block at is of oblong shape, as shown in Fig. 5, and is provided with projecting lugs m at each of its ends. A slot, 70, is formed in the feed-tube, to permit the block to play up and down when the lugs upon its ends are turned therein, as shown in Fig. 5, While the rotation of the stem by means of the knob J serves at any time to turn the projecting lugs at the ends of the block into transverse slots in the tube, and to thus fix the block vertically. These slots k are formed at their inner ends with enlargements is, for the projecting lugs to drop into on reaching the ends of the same, thereby making it necessary to open the valve a little wider in order to close it after it has been in its operative position.

The springs and nuts are so adjusted that the valve is held normally to its seat when the block is turned into the slot 7:, but may be lifted from its seat by pulling up the knob J. Such lifting carries up the nut a and compresses both the springs Z and Z, and also lifts the block an upward in the slot. The block may be retained at such elevation by locking it into the tube B by rotating the stern. Such rotation engages the lugs m with the sides of the transverse slots in the tube B, and the nut 12 then rests upon the block and holds the stem elevated with the valve above the seat at the desired point. The block is then fixedin the tube, and, although the nut prevents the lowering of the stern without releasing the block, the stem may be freely raised by pulling it up without any rotation, and compressing the spring Z between the nut n and the under side of the cap-nut G. Such a lifting of the stem serves to give a flush of oil, when desired, without deranging the adjustment of the block in.

In order to adjust the opening of the valve the nut n is set at such apoint upon the valvestem that when the block at is locked within the transverse slots the valve will be opened just enough to allow the oil to pass through at the desired rate of flow. Thus whenever the valve is opened it will allow the oil to flow at the desired rate, and will always become entirely closed when the stem is turned to free the block from engagement with the transverse slots by the spring Z.

It is evident that the particular form of the valve to be employed in my invention is in1- material, provided that it is operated by a spindle movable longitudinally.

The block may be made to slide without turning upon the stem J by any suitable means equivalent to the pin m and slot 8.

If preferred, the valve-stein. may be constructed without a screwthread to secure the nuts a and n adj ustabl y thereon. In this case the nuts could be secured thereon by pins through themselves and the valve-stein, or by any other suitable means.

The cap-nut G operates to draw the cap F down firmly upon the glass shell or easing E, but is provided upon its outer flange, which presses upon the cap, with a screw-thread, upon which the cover 0 is fitted, so as to be readily turned by a handle, 0, to and from the fillingaperture 1). By loosening the nut G the cap itself may be rotated, so that the cover, when screwed down hard on the cap, will turn arou nd upon the nut Gjust far enough to fully cover the aperture.

No stop is required to the movement of the cover, as, in case of wear, the cap may be readily turned to bring the aperture beneath the cover when screwed down.

Iain aware of German patent, No. 22,012, dated September 3, 1882, which shows a cover analogous to mine, but a construction unprovided with a valvestem and valve movable longitudinally within a I'eedtube, as in my construction. I hereby disclaim the said German patent and limit my invention to the construction described and claimed herein.

Having thus set forth my invention, what I claim herein is 1. In a lubricator or oil-cup, the combination, with the feedtube B, of a valve-seat, O, avalve, J ,having stem J threaded externally, the block m, fitted to slide without turning upon the stem, and the springs Z Z and nuts n n, arranged as described, and operated as and for the purpose set forth.

2. In alubricator, the construction for 010s ing the filling-aperture, consisting in the bottom D, having valve-seat 0, tube B, threaded externally at its upper end and inelosing valvestem J, said valve-stem, the shell E, the cap F, fitted over such shell and around the upper end of the feed-tube and provided with a filling-aperture, p, the cap-nut G, screwed upon the end of the i'eed-tubeto clamp the cap upon the shell, and provided with both internal and external screw-threads, and the cover 0, fitted to the external screw-thread upon the nut G, and adapted to cover the aperture 19 and to press upon the cap when turned upon the nut G, as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

S. PARK LATHROP.

Witnesses:

L. LEE, HENRY J. MILLER. 

